ASTM A519 4130 Alloy Steel Seamless Mechanical Tubing
Explore high-performance AISI 4130 seamless steel tubing compliant with ASTM A519. Ideal for hydraulic systems, mechanical applications, and high-pressure environments. Request a quote today.
Product Info
ASTM A519 Seamless Mechanical Tubing: Precision and Performance for Demanding Applications
Huagang Industrial supplies premium AISI 4130 seamless steel tubing manufactured in strict compliance with ASTM A519 standards. Our 4130 chromoly tubing delivers an exceptional strength-to-weight ratio, superior fatigue resistance, and excellent machinability, making it the top choice for demanding mechanical applications across industries.
Product Overview: ASTM A519 4130 Seamless Mechanical Tubing
ASTM A519 4130 alloy steel seamless tubing is a chromium-molybdenum steel tube specifically designed for mechanical applications requiring high strength, good toughness, and reliable performance under stress. The "a519 4130" combination represents a specification known for consistent performance in critical applications.
Key Advantages of Our A519 4130 Tubing:
High Strength-to-Weight Ratio: Excellent mechanical properties without excessive weight
Superior Machinability: Easily fabricated and welded for custom applications
Enhanced Durability: Chromium-molybdenum composition provides good wear resistance
Consistent Quality: Manufactured to strict ASTM A519 standards for reliable performance
Key Specifications & Features
Property | Specification |
Material Grade | AISI 4130 (UNS G41300) |
Standard | ASTM A519 - Seamless Carbon and Alloy Steel Mechanical Tubing |
Primary Applications | Hydraulic systems, mechanical components, automotive parts, machinery |
Applications of Our A519 4130 Seamless Tubing
ASTM A519 4130 tubing serves diverse industries and applications:
Hydraulic Systems
Hydraulic cylinders and piston rods
High-pressure hydraulic lines
Fluid power systems requiring reliable pressure-containing components
Mechanical Applications
Automotive components and chassis parts
Machinery and equipment structural elements
Bearing and bushing applications
Other Industrial Use
Drilling equipment components
Structural applications requiring high strength-to-weight ratio
General mechanical engineering applications
Why Choose Huagang A519 4130 Seamless Tubing?
Quality Assurance
Strict adherence to ASTM A519 standards
Comprehensive material traceability
Rigorous quality control throughout manufacturing
Manufacturing Expertise
Advanced production processes ensuring dimensional accuracy
Multiple heat treatment options available
Capability to meet custom specifications
Customer Support
Technical assistance with material selection
Custom sizing and processing options
Reliable delivery and supply chain management
Packaging, Marking & Delivery
Packaging: Bundled (hexagonal), Wooden Boxes, Crates (steel/wooden), or as per customer requirements to prevent damage in ordinary handling and transportation.
Marking: Clearly marked with Standard, Steel Grade, Size, Heat No., and Lot No. for full traceability.
Port of Shipment: Shanghai, China
Payment Terms: T/T (Telegraphic Transfer), L/C (Letter of Credit)
Product Properties
Chemical Composition
The chemical composition of AISI 4130 steel provides its distinctive properties :
Element | Content (%) |
Carbon (C) | 0.28 - 0.33 |
Chromium (Cr) | 0.80 - 1.10 |
Molybdenum (Mo) | 0.15 - 0.25 |
Manganese (Mn) | 0.40 - 0.60 |
Silicon (Si) | 0.15 - 0.35 |
Sulfur (S) | ≤ 0.040 |
Phosphorus (P) | ≤ 0.035 |
Mechanical Properties
Our A519 4130 seamless tubing delivers consistent mechanical performance :
Property | Value |
Tensile Strength | ≥ 930 MPa |
Yield Strength | ≥ 785 MPa |
Elongation | ≥ 12% |
Impact Energy | ≥ 63 J |
Hardness | ≤ 229 HB |
Note: Mechanical properties can be adjusted through heat treatment to meet specific application requirements.
Technological Advantages & Quality Control
Technological Advantages
With nearly two decades of expertise, Huagang is recognised as a top precision seamless steel tube manufacturer. We integrate R&D, production, quality management, logistics, and global customer service, enabling customers to secure stable supply and consistent product performance.
Our long-term partnerships with global brands demonstrate our capability to meet rigorous quality expectations.
Adopting cold drawn precision seamless technology to ensure high dimensional accuracy, smooth surface, and uniform wall thickness of steel tubes.
After heat treatment and surface treatment, the mechanical properties and corrosion resistance of the steel tube are further improved.
Adopting cold drawn precision seamless technology to ensure high dimensional accuracy, smooth surface, and uniform wall thickness of steel tubes. | After heat treatment and surface treatment, the mechanical properties and corrosion resistance of the steel tube are further improved. |
Delivery Status:
Designation | Symbol | Description |
Cold drawn / hard | +C (BK) | After the last cold forming no heat treatment. |
Cold drawn / soft | +LC (BKW) | After the last heat treatment, follows the cold drawing there is a light finishing pass. |
Cold drawn and stress relieved annealed | +SR (BKS) | After the final cold drawing process, the tubes are stress-relieved and annealed in a controlled atmosphere. |
Annealed | +A (GBK) | After the last cold drawing process, the tubes are annealed in a controlled atmosphere. |
Normalized | +N (NBK) | After the last cold drawing process, the tubes are normalized in a controlled atmosphere. |
Quality Control
Check Each One Individually Hydraulic test: Each steel tube undergoes a hydraulic test to ensure good sealing and pressure bearing capacity in high-pressure environments. Non destructive testing: Using ultrasonic, eddy current, or magnetic flux leakage testing techniques to detect internal defects in steel tubes and ensure product quality. | Testing Standards Compliant with international standards such as GB/T 8163, GB/T 3087, GB/T 5310, DIN, JIS, EN, ASTM, etc. Each batch of products comes with detailed quality inspection reports and certificates of conformity. | Certification Guarantee Obtained ISO/TS16949:2009 quality system certification and obtained the national special equipment pressure pipeline component manufacturing license. |
